Keys that can be used for the password so that they will be accepted by the Pre-Boot-Authentication

  • Article ID: 109063
  • Updated: 30 Sep 2010

Sophos SafeGuard Disk Encryption 4.60

Client OS

Windows 2000 Professional SP4, Windows XP SP3

Server OS



Which keys can be used for the password so that they will be accepted by the Pre-Boot-Authentication?


The PBA (Pre-Boot-Authentication) checks the “scan-code” from the keyboard and not the actual pressed characters, numbers or symbols mapped marked on the keyboard because no keyboard drivers are loaded in the Pre-Boot phase. This means that the key combination “Alt Gr + q” (on a German keyboard layout) needed for the “@” symbol, is not accepted by the PBA and it will issue a false login exception, even though the password was typed in correctly.

The following keys can be generally be used for a correct password.

Please note that the PBA may use a different keyboard layout than your operating system.
The keyboard layout is always the standard layout of the language of your operating system.
So, if you type in a password such as “system” on an English operating system with a German keyboard layout, you have to type in “szstem” in the PBA to login correctly.
A detailed description can be found in the Sophos SafeGuard Disk Encryption manual (Chapter 15.3.1 - The effects of different keyboard layouts)

Keyword: SDE Spracheinstellungen Sprache

If you need more information or guidance, then please contact technical support.

Rate this article

Very poor Excellent